from the asmatic kitty web page:
A STATEMENT FROM ASTHMATIC KITTY AND DC COMICS
It has been reported that DC Comics sent a cease and desist letter to Asthmatic Kitty regarding Sufjan Steven's album "Illinois." Not so. Asthmatic Kitty was alerted by their own lawyers of the potential copyright infringment. Therefore, Asthmatic Kitty asked retailers not to sell Sufjan Stevens' record until the situation could be resolved. DC Comics and Asthmatic Kitty have since reached an agreement that allows Asthmatic Kitty to sell the already manufactured records with cover artwork featuring Superman. The Superman image will be removed from future pressings of the album.